When did the Project Polaris rollout to Copilot subscribers begin?
According to reports, Microsoft unveiled Project Polaris at Build 2026 on June 2, and the rollout to every Copilot subscriber tier began in August 2026. The deployment reportedly covers all three tiers -- Individual, Business, and Enterprise -- making Polaris the default model for the entire Copilot subscriber base.
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Microsoft Just Replaced GPT-4 Inside GitHub Copilot With Its Own ModelProject Polaris, Microsoft's in-house coding model, is reportedly replacing GPT-4 Turbo as the default engine behind GitHub Copilot for all subscribers.
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